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handle: 10261/31601
[EN]The invention relates to a method and device for determining the fatigue resistance of metallic materials at ultrasonic frequencies and a constant temperature. The inventive method can be used to examine materials subjected to bending and traction/compression stresses at different temperatures ranging from atmospheric temperature to 1000 DEG C and at a high frequency. Said method can be used to evaluate the breaking stress and the number of cycles to which the material has been subjected and to record the break profile. The device comprises an excitation system, a data acquisition system and resonant samples of the material. [ES]El objeto de esta patente es el establecimiento de un dispositivo y un procedimiento que permiten la determinación de la resistencia a fatiga de materiales metálicos a frecuencias ultrasónicas y a temperatura constante. El procedimiento permite el estudio de materiales sometidos a tensiones de tracción-compresión y flexión, a diferentes temperaturas desde la temperatura ambiente hasta 1000 DEG C, a alta frecuencia. El procedimiento permite la evaluación de la tensión de ruptura y el número de ciclos al que el material ha sido sometido y la grabación de la historia de la ruptura. El dispositivo está constituido por un sistema de excitación, un sistema de adquisición de datos y las muestras resonantes del material.
Fecha de solicitud: 10.07.2003.- Titular: Consejo Superior de Investigaciones Cientícias (CSIC).
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